Homework Help is Here – Start Your Trial Now!
Math
Statistics
4.4. A logistic regression model is fit with the response Y of being cured of a disease (1=yes and 0=no) and the explanatory variable X being the dosage level of the treatment (in milligrams, continuous). An approximate 95% confidence interval for ei (where B1 is coefficient on X) is (1.40, 1.65). Which of the following is a correct interpretation of the interval? a. 95% confident that the true odds ratio for comparing X+1 to X (1 unit dose increase to regular dose) is between 1.4 and 1.65. b. 95% probability that the true odds ratio for comparing X+1 to X (1 unit dose increase to regular dose) is between 1.4 and 1.65. c. 95% confident that the estimated odds ratio for comparing X+1 to X (1 unit dose increase to regular dose) is between 1.4 and 1.65. d. 95% confident that the true odds ratio for comparing X+1 to X (1 unit dose increase to regular dose) is between e1.4 and e1.65. 4.5. We have a single categorical covariate X with levels 0 or 1 and a single categorical covariate W with levels 0 or 1. A model is fit with X and W main effects only (logit(µ;) = Bo + B1X; + B2W¿) and the output from R states each estimated coefficient has a p-value = 0.5 for testing if ß; = 0 for j=1,2. But the deviance test of ß1 = B2 = 0 returns a p-value of 0.0001. Choose the correct choice. a. Both X and W should not be in the model. b. Both X and W should be in the model. c. X or W (but not both) should be in the model. с. 4.6 If overdispersion is not present in these data, the estimated dispersion parameter for the quasipoisson family should be approximately equal to what value? а. 1. b. О. c. The null deviance. d. 00

4.4. A logistic regression model is fit with the response Y of being cured of a disease (1=yes and 0=no) and the explanatory variable X being the dosage level of the treatment (in milligrams, continuous). An approximate 95% confidence interval for ei (where B1 is coefficient on X) is (1.40, 1.65). Which of the following is a correct interpretation of the interval? a. 95% confident that the true odds ratio for comparing X+1 to X (1 unit dose increase to regular dose) is between 1.4 and 1.65. b. 95% probability that the true odds ratio for comparing X+1 to X (1 unit dose increase to regular dose) is between 1.4 and 1.65. c. 95% confident that the estimated odds ratio for comparing X+1 to X (1 unit dose increase to regular dose) is between 1.4 and 1.65. d. 95% confident that the true odds ratio for comparing X+1 to X (1 unit dose increase to regular dose) is between e1.4 and e1.65. 4.5. We have a single categorical covariate X with levels 0 or 1 and a single categorical covariate W with levels 0 or 1. A model is fit with X and W main effects only (logit(µ;) = Bo + B1X; + B2W¿) and the output from R states each estimated coefficient has a p-value = 0.5 for testing if ß; = 0 for j=1,2. But the deviance test of ß1 = B2 = 0 returns a p-value of 0.0001. Choose the correct choice. a. Both X and W should not be in the model. b. Both X and W should be in the model. c. X or W (but not both) should be in the model. с. 4.6 If overdispersion is not present in these data, the estimated dispersion parameter for the quasipoisson family should be approximately equal to what value? а. 1. b. О. c. The null deviance. d. 00

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
See similar textbooks
icon
Related questions
Question
4.4. A logistic regression model is fit with the response Y of being cured of a disease (1=yes and 0=no) and the explanatory variable X being the dosage level of the treatment (in milligrams, continuous). An approximate 95% confidence interval for e1 (where B1 is coefficient on X) is (1.40, 1.65). Which of the following is a correct interpretation of the interval? a. 95% confident that the true odds ratio for comparing X+1 to X (1 unit dose increase to regular dose) is between 1.4 and 1.65. b. 95% probability that the true odds ratio for comparing X+1 to X (1 unit dose increase to regular dose) is between 1.4 and 1.65. c. 95% confident that the estimated odds ratio for comparing X+1 to X (1 unit dose increase to regular dose) is between 1.4 and 1.65. d. 95% confident that the true odds ratio for comparing X+1 to X (1 unit dose increase to regular dose) is between e1.4 and e1.65. 4.5. We have a single categorical covariate X with levels 0 or 1 and a single categorical covariate W with levels 0 or 1. A model is fit with X and W main effects only (logit(µ;) = Bo + B1X; + B2W;) and the output from R states each estimated coefficient has a p-value - 0.5 for testing if B; = 0 for j=1,2. But the deviance test of B1 = B2 = 0 returns a p-value of 0.0001. Choose the correct choice. a. Both X and W should not be in the model. b. Both X and w should be in the model. c. X or W (but not both) should be in the model. 4.6 If overdispersion is not present in these data, the estimated dispersion parameter for the quasipoisson family should be approximately equal to what value? а. 1. b. 0. c. The null deviance. d. 0
Transcribed Image Text:4.4. A logistic regression model is fit with the response Y of being cured of a disease (1=yes and 0=no) and the explanatory variable X being the dosage level of the treatment (in milligrams, continuous). An approximate 95% confidence interval for e1 (where B1 is coefficient on X) is (1.40, 1.65). Which of the following is a correct interpretation of the interval? a. 95% confident that the true odds ratio for comparing X+1 to X (1 unit dose increase to regular dose) is between 1.4 and 1.65. b. 95% probability that the true odds ratio for comparing X+1 to X (1 unit dose increase to regular dose) is between 1.4 and 1.65. c. 95% confident that the estimated odds ratio for comparing X+1 to X (1 unit dose increase to regular dose) is between 1.4 and 1.65. d. 95% confident that the true odds ratio for comparing X+1 to X (1 unit dose increase to regular dose) is between e1.4 and e1.65. 4.5. We have a single categorical covariate X with levels 0 or 1 and a single categorical covariate W with levels 0 or 1. A model is fit with X and W main effects only (logit(µ;) = Bo + B1X; + B2W;) and the output from R states each estimated coefficient has a p-value - 0.5 for testing if B; = 0 for j=1,2. But the deviance test of B1 = B2 = 0 returns a p-value of 0.0001. Choose the correct choice. a. Both X and W should not be in the model. b. Both X and w should be in the model. c. X or W (but not both) should be in the model. 4.6 If overdispersion is not present in these data, the estimated dispersion parameter for the quasipoisson family should be approximately equal to what value? а. 1. b. 0. c. The null deviance. d. 0
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman
SEE MORE TEXTBOOKS